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Conference Spotlight
2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
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Two steps forward for U.K. advanced nuclear
This week, two significant announcements have emerged from the United Kingdom’s advanced reactor sector.
On June 14, Rolls-Royce, the United Kingdom National Nuclear Laboratory, and the Japan Atomic Energy Agency announced that they had signed two trilateral memorandums of cooperation to collaborate on “advanced modular reactor (AMR) technology, specifically high-temperature gas-cooled reactors (HTGR), and the coated particle fuel these reactors will use.”
Separately, on June 16, Bellevue, Wash.–based TerraPower announced that its Natrium reactor design has been formally submitted for U.K. regulatory review. The company also announced the formation of a new subsidiary, TerraPower UK Ltd.
2021 ANS Annual Meeting Plenary SPeaker
X-energy
Chief Executive Officer
J. Clay Sell was appointed CEO of X-energy in January, 2019, and has served on its advisory board since September, 2018. Sell has a deep professional background across many sectors of the U.S. and international energy industry developed during his service in senior level positions in the private sector and government.Clay completed a 14-year run in government as Deputy Secretary of Energy in the George W. Bush Administration from 2005-2008. In that role under Secretary Samuel W. Bodman III, Clay served as Chief Operating Officer of the department and emerged as one of the leading spokesmen and advocates for the Administration’s nuclear energy policies in that era. From 2003-2005, Sell served in the Bush White House as a Special Assistant to the President for Economic Policy and a Special Assistant to the President for Legislative Affairs. From 1999 to 2003, he served as the Clerk for the Senate Energy & Water Subcommittee of Appropriations under the legendary Senator Pete Domenici of New Mexico. Sell began his career in Washington on the staff of future House Armed Services Committee Chairman Mac Thornberry of Texas from 1995-1999.Clay left Washington, DC, in 2008 for his home state of Texas to pursue private business interests. From 2008 to 2018 he was the president of Hunt Energy Horizons, LLC, the renewable energy subsidiary of Hunt Consolidated, Inc., a multi-national energy, real estate, and investment corporation controlled by the Ray L. Hunt Family of Dallas.Clay holds a Juris Doctorate from the University of Texas School of Law and a BBA in Accounting from Texas Tech University.
Last modified February 23, 2021, 9:40am EST